[
https://issues.apache.org/jira/browse/KUDU-2056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16652417#comment-16652417
]
Will Berkeley commented on KUDU-2056:
-------------------------------------
Added #1 in d3684a7b2add8f06b7189adb9ce9222b8ae1eff5. That covers a metric for
the current way compaction is done, so I'm calling this done. I'll be sure to
add metrics for other sorts of compactness when Kudu starts to consider those
sorts of compactness.
> Expose a metric for how much a tablet needs to be compacted
> -----------------------------------------------------------
>
> Key: KUDU-2056
> URL: https://issues.apache.org/jira/browse/KUDU-2056
> Project: Kudu
> Issue Type: Improvement
> Components: tablet
> Reporter: Jean-Daniel Cryans
> Assignee: Will Berkeley
> Priority: Major
>
> Now that the maintenance manager is fast at scheduling tasks, I've seen
> clusters running 1.4 that are churning through compactions at a high rate
> with seemingly no end in sight. At least it *feels* like it, but there's no
> easy way to verify.
> I think it would be good to have some measure of how "uncompacted" a tablet
> is. Todd thinks we could just use the average "height" of what's seen on the
> "Rowset Layout Diagram" page.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
